* *
* CoreSight (Light?) SerialWireJtagDebugPort *
* *
- * CoreSight™ DAP-Lite TRM, ARM DDI 0316A *
- * Cortex-M3™ TRM, ARM DDI 0337C *
+ * CoreSight™ DAP-Lite TRM, ARM DDI 0316A *
+ * Cortex-M3™ TRM, ARM DDI 0337C *
* *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include <stdlib.h>
/*
-
-Transaction Mode:
-swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-Uses Overrun checking mode and does not do actual JTAG send/receive or transaction
-result checking until swjdp_end_transaction()
-This must be done before using or deallocating any return variables.
-
-swjdp->trans_mode == TRANS_MODE_ATOMIC
-All reads and writes to the AHB bus are checked for valid completion, and return values
-are immediatley available.
-
+ * Transaction Mode:
+ * swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+ * Uses Overrun checking mode and does not do actual JTAG send/receive or transaction
+ * result checking until swjdp_end_transaction()
+ * This must be done before using or deallocating any return variables.
+ * swjdp->trans_mode == TRANS_MODE_ATOMIC
+ * All reads and writes to the AHB bus are checked for valid completion, and return values
+ * are immediatley available.
*/
/***************************************************************************
swjdp_scan(swjdp->jtag_info, instr, reg_addr, RnW, outvalue, NULL, NULL);
if ((RnW == DPAP_READ) && (invalue != NULL))
{
- swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, 0xC, DPAP_READ, 0, invalue, &swjdp->ack);
+ swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, DP_RDBUFF, DPAP_READ, 0, invalue, &swjdp->ack);
}
/* In TRANS_MODE_ATOMIC all SWJDP_IR_APACC transactions wait for ack=OK/FAULT and the check CTRL_STAT */
int scan_inout_check_u32(swjdp_common_t *swjdp, u8 instr, u8 reg_addr, u8 RnW, u32 outvalue, u32 *invalue)
{
-
swjdp_scan_u32(swjdp->jtag_info, instr, reg_addr, RnW, outvalue, NULL, NULL);
if ((RnW==DPAP_READ) && (invalue != NULL))
{
- swjdp_scan_u32(swjdp->jtag_info, SWJDP_IR_DPACC, 0xC, DPAP_READ, 0, invalue, &swjdp->ack);
+ swjdp_scan_u32(swjdp->jtag_info, SWJDP_IR_DPACC, DP_RDBUFF, DPAP_READ, 0, invalue, &swjdp->ack);
}
/* In TRANS_MODE_ATOMIC all SWJDP_IR_APACC transactions wait for ack=OK/FAULT and then check CTRL_STAT */
if (waitcount > 100)
{
WARNING("Timeout waiting for ACK = OK/FAULT in SWJDP transaction");
-
return ERROR_JTAG_DEVICE_ERROR;
}
}
int swjdp_write_dpacc(swjdp_common_t *swjdp, u32 value, u8 reg_addr)
{
- u8 out_value_buf[4];
-
- buf_set_u32(out_value_buf, 0, 32, value);
- return scan_inout_check(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_WRITE, out_value_buf, NULL);
+ return scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_WRITE, value, NULL);
}
int swjdp_read_dpacc(swjdp_common_t *swjdp, u32 *value, u8 reg_addr)
{
- scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_READ, 0, value);
-
- return ERROR_OK;
+ return scan_inout_check_u32(swjdp, SWJDP_IR_DPACC, reg_addr, DPAP_READ, 0, value);
}
int swjdp_bankselect_apacc(swjdp_common_t *swjdp,u32 reg_addr)
if (csw != swjdp->ap_csw_value)
{
/* DEBUG("swjdp : Set CSW %x",csw); */
- ahbap_write_reg_u32(swjdp, AHBAP_CSW, csw );
+ ahbap_write_reg_u32(swjdp, AHBAP_CSW, csw );
swjdp->ap_csw_value = csw;
}
if (tar != swjdp->ap_tar_value)
}
if (csw & CSW_ADDRINC_MASK)
{
- /* Do not cache TAR value when autoincrementing */
+ /* Do not cache TAR value when autoincrementing */
swjdp->ap_tar_value = -1;
}
return ERROR_OK;
* Write a buffer in target order (little endian) *
* *
*****************************************************************************/
-int ahbap_write_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+int ahbap_write_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
{
u32 outvalue;
int wcount, blocksize, writecount, errorcount = 0, retval = ERROR_OK;
-
+ u32 adr = address;
+ u8* pBuffer = buffer;
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
-
- while ((address & 0x3) && (count > 0))
+
+ count >>= 2;
+ wcount = count;
+
+ /* if we have an unaligned access - reorder data */
+ if (adr & 0x3u)
{
- ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
- outvalue = (*buffer++) << 8 * (address & 0x3);
- ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue );
- swjdp_transaction_endcheck(swjdp);
- count--;
- address++;
+ for (writecount = 0; writecount < count; writecount++)
+ {
+ int i;
+ outvalue = *((u32*)pBuffer);
+
+ for (i = 0; i < 4; i++ )
+ {
+ *((u8*)pBuffer + (adr & 0x3)) = outvalue;
+ outvalue >>= 8;
+ adr++;
+ }
+ pBuffer += 4;
+ }
}
- wcount = count >> 2;
- count = count - 4 * wcount;
+
while (wcount > 0)
{
/* Adjust to write blocks within 4K aligned boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 2;
if (wcount < blocksize)
blocksize = wcount;
+
+ /* handle unaligned data at 4k boundary */
+ if (blocksize == 0)
+ blocksize = 1;
+
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
- for (writecount=0; writecount<blocksize; writecount++)
+
+ for (writecount = 0; writecount < blocksize; writecount++)
{
ahbap_write_reg(swjdp, AHBAP_DRW, buffer + 4 * writecount );
}
+
if (swjdp_transaction_endcheck(swjdp) == ERROR_OK)
{
wcount = wcount - blocksize;
{
errorcount++;
}
+
if (errorcount > 1)
{
WARNING("Block write error address 0x%x, wcount 0x%x", address, wcount);
}
}
- while (count > 0)
+ return retval;
+}
+
+int ahbap_write_buf_packed_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 outvalue;
+ int retval = ERROR_OK;
+ int wcount, blocksize, writecount, i;
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ wcount = count >> 1;
+
+ while (wcount > 0)
{
- ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
- outvalue = (*buffer++) << 8 * (address & 0x3);
- ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue );
- retval = swjdp_transaction_endcheck(swjdp);
- count--;
- address++;
+ int nbytes;
+
+ /* Adjust to read within 4K block boundaries */
+ blocksize = (0x1000 - (0xFFF & address)) >> 1;
+
+ if (wcount < blocksize)
+ blocksize = wcount;
+
+ /* handle unaligned data at 4k boundary */
+ if (blocksize == 0)
+ blocksize = 1;
+
+ ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address);
+ writecount = blocksize;
+
+ do
+ {
+ nbytes = MIN((writecount << 1), 4);
+
+ if (nbytes < 4 )
+ {
+ if (ahbap_write_buf_u16(swjdp, buffer, nbytes, address) != ERROR_OK)
+ {
+ WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ address += nbytes >> 1;
+ }
+ else
+ {
+ outvalue = *((u32*)buffer);
+
+ for (i = 0; i < nbytes; i++ )
+ {
+ *((u8*)buffer + (address & 0x3)) = outvalue;
+ outvalue >>= 8;
+ address++;
+ }
+
+ outvalue = *((u32*)buffer);
+ ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue);
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+ }
+
+ buffer += nbytes >> 1;
+ writecount -= nbytes >> 1;
+
+ } while (writecount);
+ wcount -= blocksize;
}
-
+
return retval;
}
u32 outvalue;
int retval = ERROR_OK;
+ if (count >= 4)
+ return ahbap_write_buf_packed_u16(swjdp, buffer, count, address);
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
while (count > 0)
return retval;
}
-/*****************************************************************************
-* *
-* ahbap_read_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address) *
-* *
-* Read block fast in target order (little endian) into a buffer *
-* *
-*****************************************************************************/
-int ahbap_read_buf(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+int ahbap_write_buf_packed_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
{
- u32 invalue;
- int wcount, blocksize, readcount, errorcount = 0, retval = ERROR_OK;
-
+ u32 outvalue;
+ int retval = ERROR_OK;
+ int wcount, blocksize, writecount, i;
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ wcount = count;
+
+ while (wcount > 0)
+ {
+ int nbytes;
+
+ /* Adjust to read within 4K block boundaries */
+ blocksize = (0x1000 - (0xFFF & address));
+
+ if (wcount < blocksize)
+ blocksize = wcount;
+
+ ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address);
+ writecount = blocksize;
+
+ do
+ {
+ nbytes = MIN(writecount, 4);
+
+ if (nbytes < 4 )
+ {
+ if (ahbap_write_buf_u8(swjdp, buffer, nbytes, address) != ERROR_OK)
+ {
+ WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ address += nbytes;
+ }
+ else
+ {
+ outvalue = *((u32*)buffer);
+
+ for (i = 0; i < nbytes; i++ )
+ {
+ *((u8*)buffer + (address & 0x3)) = outvalue;
+ outvalue >>= 8;
+ address++;
+ }
+
+ outvalue = *((u32*)buffer);
+ ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue);
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+ }
+
+ buffer += nbytes;
+ writecount -= nbytes;
+
+ } while (writecount);
+ wcount -= blocksize;
+ }
+
+ return retval;
+}
- while ((address & 0x3) && (count > 0))
+int ahbap_write_buf_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 outvalue;
+ int retval = ERROR_OK;
+
+ if (count >= 4)
+ return ahbap_write_buf_packed_u8(swjdp, buffer, count, address);
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ while (count > 0)
{
ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
- ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue);
- swjdp_transaction_endcheck(swjdp);
- *buffer++ = (invalue >> 8 * (address & 0x3)) & 0xFF;
+ outvalue = *((u8*)buffer) << 8 * (address & 0x3);
+ ahbap_write_reg_u32(swjdp, AHBAP_DRW, outvalue );
+ retval = swjdp_transaction_endcheck(swjdp);
count--;
address++;
+ buffer++;
}
- wcount = count >> 2;
- count = count - 4 * wcount;
+
+ return retval;
+}
+
+/*********************************************************************************
+* *
+* ahbap_read_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address) *
+* *
+* Read block fast in target order (little endian) into a buffer *
+* *
+**********************************************************************************/
+int ahbap_read_buf_u32(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ int wcount, blocksize, readcount, errorcount = 0, retval = ERROR_OK;
+ u32 adr = address;
+ u8* pBuffer = buffer;
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ count >>= 2;
+ wcount = count;
+
while (wcount > 0)
{
/* Adjust to read within 4K block boundaries */
blocksize = (0x1000 - (0xFFF & address)) >> 2;
if (wcount < blocksize)
blocksize = wcount;
+
+ /* handle unaligned data at 4k boundary */
+ if (blocksize == 0)
+ blocksize = 1;
+
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
+
/* Scan out first read */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AHBAP_DRW, DPAP_READ, 0, NULL, NULL);
for (readcount = 0; readcount < blocksize - 1; readcount++)
/* Scan out read instruction and scan in previous value */
swjdp_scan(swjdp->jtag_info, SWJDP_IR_APACC, AHBAP_DRW, DPAP_READ, 0, buffer + 4 * readcount, &swjdp->ack);
}
+
/* Scan in last value */
- swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, 0xC, DPAP_READ, 0, buffer + 4 * readcount, &swjdp->ack);
+ swjdp_scan(swjdp->jtag_info, SWJDP_IR_DPACC, DP_RDBUFF, DPAP_READ, 0, buffer + 4 * readcount, &swjdp->ack);
if (swjdp_transaction_endcheck(swjdp) == ERROR_OK)
{
wcount = wcount - blocksize;
{
errorcount++;
}
+
if (errorcount > 1)
{
WARNING("Block read error address 0x%x, count 0x%x", address, count);
return ERROR_JTAG_DEVICE_ERROR;
}
}
-
- while (count > 0)
+
+ /* if we have an unaligned access - reorder data */
+ if (adr & 0x3u)
{
- ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
- ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
- retval = swjdp_transaction_endcheck(swjdp);
- *buffer++ = (invalue >> 8 * (address & 0x3)) & 0xFF;
- count--;
- address++;
+ for (readcount = 0; readcount < count; readcount++)
+ {
+ int i;
+ u32 data = *((u32*)pBuffer);
+
+ for (i = 0; i < 4; i++ )
+ {
+ *((u8*)pBuffer) = (data >> 8 * (adr & 0x3));
+ pBuffer++;
+ adr++;
+ }
+ }
}
+
+ return retval;
+}
+int ahbap_read_buf_packed_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 invalue;
+ int retval = ERROR_OK;
+ int wcount, blocksize, readcount, i;
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ wcount = count >> 1;
+
+ while (wcount > 0)
+ {
+ int nbytes;
+
+ /* Adjust to read within 4K block boundaries */
+ blocksize = (0x1000 - (0xFFF & address)) >> 1;
+ if (wcount < blocksize)
+ blocksize = wcount;
+
+ ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_PACKED, address);
+
+ /* handle unaligned data at 4k boundary */
+ if (blocksize == 0)
+ blocksize = 1;
+ readcount = blocksize;
+
+ do
+ {
+ ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ nbytes = MIN((readcount << 1), 4);
+
+ for (i = 0; i < nbytes; i++ )
+ {
+ *((u8*)buffer) = (invalue >> 8 * (address & 0x3));
+ buffer++;
+ address++;
+ }
+
+ readcount -= (nbytes >> 1);
+ } while (readcount);
+ wcount -= blocksize;
+ }
+
return retval;
}
int ahbap_read_buf_u16(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
{
- u32 invalue;
+ u32 invalue, i;
int retval = ERROR_OK;
+ if (count >= 4)
+ return ahbap_read_buf_packed_u16(swjdp, buffer, count, address);
+
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
while (count > 0)
ahbap_setup_accessport(swjdp, CSW_16BIT | CSW_ADDRINC_SINGLE, address);
ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
retval = swjdp_transaction_endcheck(swjdp);
- *((u16*)buffer) = (invalue >> 8 * (address & 0x3));
+ if (address & 0x1)
+ {
+ for (i = 0; i < 2; i++ )
+ {
+ *((u8*)buffer) = (invalue >> 8 * (address & 0x3));
+ buffer++;
+ address++;
+ }
+ }
+ else
+ {
+ *((u16*)buffer) = (invalue >> 8 * (address & 0x3));
+ address += 2;
+ buffer += 2;
+ }
count -= 2;
- address += 2;
- buffer += 2;
}
return retval;
}
-int ahbap_block_read_u32(swjdp_common_t *swjdp, u32 *buffer, int count, u32 address)
+int ahbap_read_buf_packed_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
{
- int readcount, errorcount = 0;
- u32 blocksize;
+ u32 invalue;
+ int retval = ERROR_OK;
+ int wcount, blocksize, readcount, i;
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
- while (count > 0)
+ wcount = count;
+
+ while (wcount > 0)
{
+ int nbytes;
+
/* Adjust to read within 4K block boundaries */
- blocksize = (0x1000 - (0xFFF & address)) >> 2;
- if (count < blocksize)
- blocksize = count;
- ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_SINGLE, address);
- for (readcount = 0; readcount < blocksize; readcount++)
- {
- ahbap_read_reg_u32(swjdp, AHBAP_DRW, buffer + readcount );
- }
- if (swjdp_transaction_endcheck(swjdp) == ERROR_OK)
- {
- count = count - blocksize;
- address = address + 4 * blocksize;
- buffer = buffer + blocksize;
- }
- else
- {
- errorcount++;
- }
- if (errorcount > 1)
+ blocksize = (0x1000 - (0xFFF & address));
+
+ if (wcount < blocksize)
+ blocksize = wcount;
+
+ ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_PACKED, address);
+ readcount = blocksize;
+
+ do
{
- WARNING("Block read error address 0x%x, count 0x%x", address, count);
- return ERROR_JTAG_DEVICE_ERROR;
- }
+ ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
+ if (swjdp_transaction_endcheck(swjdp) != ERROR_OK)
+ {
+ WARNING("Block read error address 0x%x, count 0x%x", address, count);
+ return ERROR_JTAG_DEVICE_ERROR;
+ }
+
+ nbytes = MIN(readcount, 4);
+
+ for (i = 0; i < nbytes; i++ )
+ {
+ *((u8*)buffer) = (invalue >> 8 * (address & 0x3));
+ buffer++;
+ address++;
+ }
+
+ readcount -= nbytes;
+ } while (readcount);
+ wcount -= blocksize;
}
+
+ return retval;
+}
- return ERROR_OK;
+int ahbap_read_buf_u8(swjdp_common_t *swjdp, u8 *buffer, int count, u32 address)
+{
+ u32 invalue;
+ int retval = ERROR_OK;
+
+ if (count >= 4)
+ return ahbap_read_buf_packed_u8(swjdp, buffer, count, address);
+
+ swjdp->trans_mode = TRANS_MODE_COMPOSITE;
+
+ while (count > 0)
+ {
+ ahbap_setup_accessport(swjdp, CSW_8BIT | CSW_ADDRINC_SINGLE, address);
+ ahbap_read_reg_u32(swjdp, AHBAP_DRW, &invalue );
+ retval = swjdp_transaction_endcheck(swjdp);
+ *((u8*)buffer) = (invalue >> 8 * (address & 0x3));
+ count--;
+ address++;
+ buffer++;
+ }
+
+ return retval;
}
int ahbap_read_coreregister_u32(swjdp_common_t *swjdp, u32 *value, int regnum)
int retval;
u32 dcrdr;
+ /* because the DCB_DCRDR is used for the emulated dcc channel
+ * we gave to save/restore the DCB_DCRDR when used */
+
ahbap_read_system_atomic_u32(swjdp, DCB_DCRDR, &dcrdr);
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
int retval;
u32 dcrdr;
+ /* because the DCB_DCRDR is used for the emulated dcc channel
+ * we gave to save/restore the DCB_DCRDR when used */
+
ahbap_read_system_atomic_u32(swjdp, DCB_DCRDR, &dcrdr);
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
/* With debug power on we can activate OVERRUN checking */
swjdp->dp_ctrl_stat = CDBGPWRUPREQ | CSYSPWRUPREQ | CORUNDETECT;
- swjdp_write_dpacc(swjdp, swjdp->dp_ctrl_stat , DP_CTRL_STAT);
+ swjdp_write_dpacc(swjdp, swjdp->dp_ctrl_stat, DP_CTRL_STAT);
swjdp_read_dpacc(swjdp, &dummy, DP_CTRL_STAT);
ahbap_read_reg_u32(swjdp, 0xFC, &idreg);
ahbap_read_reg_u32(swjdp, 0xF8, &romaddr);
- DEBUG("AHB-AP ID Register 0x%x, Debug ROM Address 0x%x", idreg, romaddr);
+ DEBUG("AHB-AP ID Register 0x%x, Debug ROM Address 0x%x", idreg, romaddr);
return ERROR_OK;
}
projects / fw / openocd / commitdiff